[linux-dvb] Re: SkyStar2 Rev. 2.6C & hyperthreading

[Reinhard Nissl <rnissl@gmx.de>]

Hi,

Johannes Stezenbach wrote:

>>Is the following screenshot of the lockup helpful?
>>
>>    http://home.vr-web.de/~rnissl/dvb/p5033564.jpg
>
> Well maybe. I think there were some spin_lock()s missing
> in the software demux, which I added in CVS (dvb_demux.c).
> Generally the rule is that data which is shared by process
> context and irqs (or between irqs on SMP) must be protected
> by spinlocks. However, the software demux accesses data from
> many software layers, so I am not confident that I fixed
> it for good :-(

It seems, that your changes fixed the issue (at least for me). I've been 
running a recording on my NOVA-S and watching Euro 1080 HDTV channel with the 
SkyStar2 during the past 3,5 hours without freezing. Before your changes, it 
happend reliably within that time, when both cards were working.

Maybe the output of "cat /proc/interrupts" gives enough statistical background 
to consider the issue fixed:

video:~ # cat /proc/interrupts
           CPU0       CPU1
  0:    7416156          1    IO-APIC-edge  timer
  1:      17778          1    IO-APIC-edge  i8042
  2:          0          0          XT-PIC  cascade
  4:        673          0    IO-APIC-edge  lirc_serial
  8:          2          0    IO-APIC-edge  rtc
  9:          0          0   IO-APIC-level  acpi
 12:      72033          0    IO-APIC-edge  i8042
 14:     132661          1    IO-APIC-edge  ide0
 15:         70          0    IO-APIC-edge  ide1
 17:     163450          0   IO-APIC-level  Intel ICH5
 18:      20496          0   IO-APIC-level  eth0
 21:      38580          0   IO-APIC-level  Skystar2
 22:     514031          0   IO-APIC-level  saa7146 (0)
 23:          0          0   IO-APIC-level  ehci_hcd
NMI:          0          0
LOC:    7415935    7415934
ERR:          0
MIS:          0
video:~ #

Thank you very much for your help.

Bye.
--
Dipl.-Inform. (FH) Reinhard Nissl
mailto:rnissl@gmx.de


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